greybus: arche-platform: merge arche-apb-ctrl and arche-platform

No need to have two separate arche platform drivers, that's just crazy,
so merge them both together to be only one kernel module.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Reviewed-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Tested-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>

drivers/staging/greybus/Makefile

@@ -28,8 +28,7 @@ gb-light-y := light.o
 gb-raw-y := raw.o
 gb-hid-y := hid.o
 gb-es2-y := es2.o
-gb-arche-y := arche-platform.o
-gb-arche-apb-ctrl-y := arche-apb-ctrl.o
+gb-arche-y := arche-platform.o arche-apb-ctrl.o
 gb-audio-codec-y := audio-codec.o
 gb-camera-y := camera.o
 
@@ -43,7 +42,6 @@ obj-m += gb-hid.o
 obj-m += gb-raw.o
 obj-m += gb-es2.o
 obj-m += gb-arche.o
-obj-m += gb-arche-apb-ctrl.o
 obj-m += gb-audio-codec.o
 obj-m += gb-camera.o
 

drivers/staging/greybus/arche-apb-ctrl.c

@@ -23,6 +23,7 @@
 #include <linux/spinlock.h>
 #include <linux/regulator/consumer.h>
 #include <linux/pinctrl/consumer.h>
+#include "arche_platform.h"
 
 enum apb_state {
 	APB_STATE_OFF,
@@ -279,7 +280,7 @@ static void apb_ctrl_cleanup(struct arche_apb_ctrl_drvdata *apb)
 	/* TODO: May have to send an event to SVC about this exit */
 }
 
-static int arche_apb_ctrl_probe(struct platform_device *pdev)
+int arche_apb_ctrl_probe(struct platform_device *pdev)
 {
 	int ret;
 	struct arche_apb_ctrl_drvdata *apb;
@@ -335,7 +336,7 @@ static int arche_apb_ctrl_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int arche_apb_ctrl_remove(struct platform_device *pdev)
+int arche_apb_ctrl_remove(struct platform_device *pdev)
 {
 	struct arche_apb_ctrl_drvdata *apb = platform_get_drvdata(pdev);
 
@@ -375,28 +376,8 @@ static int arche_apb_ctrl_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(arche_apb_ctrl_pm_ops,
-			arche_apb_ctrl_suspend,
-			arche_apb_ctrl_resume);
+SIMPLE_DEV_PM_OPS(arche_apb_ctrl_pm_ops,
+		  arche_apb_ctrl_suspend,
+		  arche_apb_ctrl_resume);
 
-static struct of_device_id arche_apb_ctrl_of_match[] = {
-	{ .compatible = "usbffff,2", },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, arche_apb_ctrl_of_match);
-
-static struct platform_driver arche_apb_ctrl_device_driver = {
-	.probe		= arche_apb_ctrl_probe,
-	.remove		= arche_apb_ctrl_remove,
-	.driver		= {
-		.name	= "arche-apb-ctrl",
-		.pm	= &arche_apb_ctrl_pm_ops,
-		.of_match_table = of_match_ptr(arche_apb_ctrl_of_match),
-	}
-};
-
-module_platform_driver(arche_apb_ctrl_device_driver);
 
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Vaibhav Hiremath <vaibhav.hiremath@linaro.org>");
-MODULE_DESCRIPTION("Arche APB control Driver");

drivers/staging/greybus/arche-platform.c

@@ -23,6 +23,7 @@
 #include <linux/spinlock.h>
 #include <linux/regulator/consumer.h>
 #include <linux/pinctrl/consumer.h>
+#include "arche_platform.h"
 
 struct arche_platform_drvdata {
 	/* Control GPIO signals to and from AP <=> SVC */
@@ -208,7 +209,18 @@ static struct of_device_id arche_platform_of_match[] = {
 	{ .compatible = "google,arche-platform", }, /* Use PID/VID of SVC device */
 	{ },
 };
-MODULE_DEVICE_TABLE(of, arche_platform_of_match);
+
+static struct of_device_id arche_apb_ctrl_of_match[] = {
+	{ .compatible = "usbffff,2", },
+	{ },
+};
+
+static struct of_device_id arche_combined_id[] = {
+	{ .compatible = "google,arche-platform", }, /* Use PID/VID of SVC device */
+	{ .compatible = "usbffff,2", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, arche_combined_id);
 
 static struct platform_driver arche_platform_device_driver = {
 	.probe		= arche_platform_probe,
@@ -216,11 +228,42 @@ static struct platform_driver arche_platform_device_driver = {
 	.driver		= {
 		.name	= "arche-platform-ctrl",
 		.pm	= &arche_platform_pm_ops,
-		.of_match_table = of_match_ptr(arche_platform_of_match),
+		.of_match_table = arche_platform_of_match,
 	}
 };
 
-module_platform_driver(arche_platform_device_driver);
+static struct platform_driver arche_apb_ctrl_device_driver = {
+	.probe		= arche_apb_ctrl_probe,
+	.remove		= arche_apb_ctrl_remove,
+	.driver		= {
+		.name	= "arche-apb-ctrl",
+		.pm	= &arche_apb_ctrl_pm_ops,
+		.of_match_table = arche_apb_ctrl_of_match,
+	}
+};
+
+static int __init arche_init(void)
+{
+	int retval;
+
+	retval = platform_driver_register(&arche_platform_device_driver);
+	if (retval)
+		return retval;
+
+	retval = platform_driver_register(&arche_apb_ctrl_device_driver);
+	if (retval)
+		platform_driver_unregister(&arche_platform_device_driver);
+
+	return retval;
+}
+module_init(arche_init);
+
+static void __exit arche_exit(void)
+{
+	platform_driver_unregister(&arche_apb_ctrl_device_driver);
+	platform_driver_unregister(&arche_platform_device_driver);
+}
+module_exit(arche_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Vaibhav Hiremath <vaibhav.hiremath@linaro.org>");

drivers/staging/greybus/arche_platform.h

+/*
+ * Arche Platform driver to enable Unipro link.
+ *
+ * Copyright 2015-2016 Google Inc.
+ * Copyright 2015-2016 Linaro Ltd.
+ *
+ * Released under the GPLv2 only.
+ */
+
+#ifndef __ARCHE_PLATFORM_H
+#define __ARCHE_PLATFORM_H
+
+int arche_apb_ctrl_probe(struct platform_device *pdev);
+int arche_apb_ctrl_remove(struct platform_device *pdev);
+extern const struct dev_pm_ops arche_apb_ctrl_pm_ops;
+
+#endif	/* __ARCHE_PLATFORM_H */